Tourists' bad manners had become intolerable, so the city made new rules.
Usage
Used by someone in a position to judge or correct (a teacher, a manager, a city) about another's conduct, usually just before stepping in. Common forms: 目に余る行為 / 態度 / 言動, and 〜が目に余る.
Similar words
見るに見かねる: unable to stand by and watch (often leading to helping).
我慢できない: cannot stand it (everyday, about one's own patience).